/*
 * Copyright (C) 2016 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#pragma once

#include <android-base/macros.h>
#include <android/hardware/sensors/1.0/ISensors.h>
#include <hardware/sensors.h>
#include <mutex>
#include <vector>

namespace android {
namespace hardware {
namespace sensors {
namespace V1_0 {
namespace implementation {

struct Sensors : public ::android::hardware::sensors::V1_0::ISensors {
    Sensors();

    status_t initCheck() const;

    Return<void> getSensorsList(getSensorsList_cb _hidl_cb) override;

    Return<Result> setOperationMode(OperationMode mode) override;

    Return<Result> activate(int32_t sensor_handle, bool enabled) override;

    Return<void> poll(int32_t maxCount, poll_cb _hidl_cb) override;

    Return<Result> batch(int32_t sensor_handle, int64_t sampling_period_ns,
                         int64_t max_report_latency_ns) override;

    Return<Result> flush(int32_t sensor_handle) override;

    Return<Result> injectSensorData(const Event& event) override;

    Return<void> registerDirectChannel(const SharedMemInfo& mem,
                                       registerDirectChannel_cb _hidl_cb) override;

    Return<Result> unregisterDirectChannel(int32_t channelHandle) override;

    Return<void> configDirectReport(int32_t sensorHandle, int32_t channelHandle, RateLevel rate,
                                    configDirectReport_cb _hidl_cb) override;

  private:
    static constexpr int32_t kPollMaxBufferSize = 128;
    status_t mInitCheck;
    sensors_module_t* mSensorModule;
    sensors_poll_device_1_t* mSensorDevice;
    std::mutex mPollLock;

    int getHalDeviceVersion() const;
    std::vector<SensorInfo> getFixedUpSensorList();

    static void convertFromSensorEvents(size_t count, const sensors_event_t* src,
                                        std::vector<Event>& dst,
                                        std::vector<SensorInfo> sensorsList);

    DISALLOW_COPY_AND_ASSIGN(Sensors);
};

extern "C" ISensors* HIDL_FETCH_ISensors(const char* name);

}  // namespace implementation
}  // namespace V1_0
}  // namespace sensors
}  // namespace hardware
}  // namespace android
